EP1685124A1 — Substituted nitrogen-containing six-membered amino-heterocycles as vanilloid-1 receptor antagonists for treating pain

USPTO Abstract

The present invention provides a compound of formula (I): Y-J-NH-Z wherein: Y is a quinoline or isoquinoline optionally substituted with one or two substituents independently chosen from hydroxy, halogen, haloC1-4alkyl, C1-4alkyl, C1-4alkoxy, haloC1-4alkoxy, nitro and amino; J is pyridine, pyridazine, pyrazine, pyrimidine or triazine optionally substituted with one or two substituents independently chosen from hydroxy, halogen, haloC1-4alkyl, C1-4alkyl, C3-5cycloalkyl, C1-4alkoxy, hydroxyC1- 4alkyl, cyano, hydroxy, C1-4cycloalkoxy, C1-4alkylthio, haloC1-4alkoxy, nitro, Q, (CH2)pQ, NR2R3, -(CH2)pNR2R3 and -O(CH2)pNR2R3; wherein J is substituted at positions meta to each other by NH and Y; and Z is phenyl or pyridyl optionally substituted with one or two substituents independently selected from halogen, haloC1-4alkyl, C1-4alkyl, C1-4alkoxy, haloC1-4alkoxy, nitro and amino; Q is phenyl, a five-membered heterocyclic ring containing one, two, three or four heteroatoms chosen from O, N and S, at most one heteroatom being O or S, or a six-membered heterocyclic ring containing one, two or three nitrogen atoms, optionally substituted by C1-4alkyl; each R2 and R3 is chosen from H and C1-4alkyl, or R2 and R3, together with the nitrogen atom to which they are attached, may form a six-membered ring optionally containing an oxygen atom or a further nitrogen atom, which ring is optionally substituted by C1-4alkyl or Q; p is 1, 2 or 3; or a pharmaceutically acceptable salt thereof; pharmaceutical compositions comprising it; its use in methods of therapy; use of it for manufacturing medicaments; and methods of using it to treat diseases requiring administration of a VR1 antagonist such as pain, cough, GERD and depression.